"On January 12, Microsoft announced officially the availability and rebranding of the Revolution R Enterprise line as "Microsoft R Server" Company officials also said for the record that Revolution R Open is now called "Microsoft R Open" and available as a free download.

R is a programming language that can be used in big-data statistics, predictive modeling and machine learning . Microsoft last April completed its acquisition of Revolution Analytics, the maker of a distribution of the R programming language for statistical computing and predictive analytics, for an undisclosed amount."